Fuel-supply for internal-combustion engines



y A. H. PAPE.

FUEL SUPPLY FOR INTERNAL COMBUSTION ENGINES.

APPLICMION FILED MAR. 4,1919.

Patented June 29, 1920.

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IIIIIIIIIIII AIIIIIIIHA VVE/V717@ A H PAPE' ATWY UNITED STATES PATENT OFFICE.

AUGUST 1i. ,PAPE7 or KENTFIELD, CALIFORNIA.

FUEL-SUPPLY FOR INTERNAL-COMBUSTION ENGINES.

To all whom t may concern.'

Be it known that I, AUGUST H. PAPE, a citizen of the United States, residing at Kentiield, in the county of Marin and State of'California, have invented new and useful Improvements in Fuel-Supplies for 1nternal-Combustion Engines, of which the following is a specification.

The object of the present invention is to provide an apparatus whereby a limited, comparatively small, quantity of Huid fuel, as for instance, gasolene, may be supplied to an inlet manifold of an internal combustion engine, and such that, while such supply is being made, the main source of supply may be automatically cut off, thereby preventing waste of the iiuid fuel due to carelessness or forgetfulness on the part of the operator of the device, said main supply being automatically renewed when the supply to the engine is cut off.

[n the accompanying drawing, Figure 1 is a broken side view of my improved device; Fig. 2 is a detail side view of an operating disk.

Referring to the drawing, 1 indicates a main tank for containing iiuid fuel such as gasolene, and 2 a comparatively small tank for containing only therquantity of gasolene which is necessary at one time. It is becoming more and more the practice to operate internal combustion engines by distillate or other oil heavier than gasolene, but when such operation is in use, it is frequently necessary or desirable, as for in# stance in starting the engine, or when a long hill is to be surmounted or in travel ing over soft ground, or when from some other cause the engine appears to be failing, to be able to supply a small quantity of gasolene, either in addition to, or in place of, the ordinary fluid fuel such as distillate. The present contrivance enables this small quantity of gasolene to be supplied, and at the same time, shuts off the main supply of gasolene so that should the operator, after turning on the gasolene, forget to turn it off, no more than a certain small quantity of gasolene would be consumed, and also enables the small receptacle 2 for gasolene to be automatically replenished when the supply to the engine has been cut oif.

The small tank 2 is secured to the bottom of the main tank 1 and has, extending from its upper side through the bottom of said main tank 1, apertured bosses 3, 4, leading Application filed March 4, 1919.

Specification of Letters Patent. Patented June 29, 1920.

Serial No. 280,547.

into said tank 2. Connecting with the aperture in the boss 3, is the lower end of a vertical pipe 6 which leads through the top of the main tank 1. To its upper open end is pivoted as Shown at 7, one end of a lever 8, which extends through diametrically opposite slots 9 in the upper terminal portion of a tube 1() slidable vertically in a tube 11, the lower end of which is secured to the boss 4 and communicates with an aperture 12 therein leading into the tank 2 while the upper end extends through the toa of the tank 1. The lower end of the tu 10 is secured to a conical valve 13, which controls the passage into the .aperture 12 of gasolene flowing from the main tank 1 through a lateral aperture 14 into the lower end of the tube 11.

To the free end of the lever 8 is pivotally connected the upper end of a stem 15 which can slide vertically in guides 16 secured upon an end of the main tank 1, the lower end of said stem resting upon the periphery of a disk 17 which has diametrically opposite holes 18 therethrough. Through said holes 18 extend the tines 19 of a forked end of a handle 21 which extends through the dash 22 of the automobile and is formed behind said wind-shield with a handle 23. One of said tines 19 is secured to Said disk 17 by a Cotter-pin 24. Thus the disk can be turned about its axis by operating the handle 23. By turning said disk a cam or hump 26 on its periphery is adapted to engage the lower end of said stem 15 and raise the same, as shown in Fig. 2, thereby, through the medium of the lever 8, raising the conical valve 13 from its seat and admitting gasolene from the main tank 1 into the small tank 2. Through a central threaded hole 27 in the disk 17 is screwed a thread-4 ed portion of a stem 28 of a needle valve 29, and after said valve 29 has been properly adjusted to its seat, said stem is locked in said disk by means of a lock-nut 31. Ann other threaded portion 32 of said stem is screwed into a T-shaped valve casing 33, said stem passing through a stuling box 34 secured upon an end of said valve casing 33, and, by reason of the engagement of the threaded portion 32 of the stem with the internally threaded portion of the valve casing, the rotation of the stem causes the needle valve 29 to move to or from its seat. Said casing is screwed into a boss 36 extending from the small tank 2 and has a conduit 37 communicating with a conduit 38 leading from said tank 2 in said boss 36, so that said needle valve controls the escape of gasolene through said conduits from said tank 2. If the gasolene be permitted to pass the valve 29, it flows through a con` duit 39 in a central member of said T- shaped casting and into the upper end of a -flexible pipe 41, said upper end being connected with said T-shaped casting through a stufhng-box +2. The lower end of said flexible tube communicates with the inlet manifold of the engine.

rlhe parts are so arranged, that when the handle 23 is turned so as to raise the conical valve 13 from its seat and permit gasolene to flow from the main tank 1 to the small tank 2, the needle valve 29 is closed so that no gasolene can escape from said tank 2. It is to permit the gasolene to flow into said tank 2 from the tank 1 that the pipe 6 is provided, since it allows the air to escape from said tank 2 as gasolene flows thereinto. When the handle 23 is turned to withdraw the cam-shaped portion 26 of the periphery of the disk 17 from the bottom of the stem 15, said stem drops and the conical valve 13 drops, cutting ofi' the flow of fluid fuel from the tank 1 to the tank 2. At the same time the rotation of the disk 17 causes the needle valve 29 to be withdrawn from its seat and allows gasolene to liow from the tank 2 through the pipe l1 and into the inlet mani- Afold of the engine, this iow being permitted by reason of the tank 2 being open to the atmosphere through the pipe 6. However, only the quantity of gasolene in the tank 2 can so flow to the inlet manifold. lVhen the operator again closes the outlet from the tank 2, he automatically opens the inlet to the tank 2 and the valve 13 and thus the tank 2 is again replenished from the tank 1.

,Vhile the apparatus is primarily designed to allow only a small quantity of gasolene to be supplied at one time to the engine, yet it may be desirable to supply a constant stream of gasolene of small volume to be added to distiliate to enrich the fuel. This is done by forming the latter half of the periphery of the disk, which comes in contact with the bottom of the pin 15, of a radius gradually increasing until the periphery of the disk coincides with the top of the hump 26. ln this way, on turning the disk 1.7 through any angular distance considerably less than a semi-circle, the valve 13 will remain closed, lout on turning it more through a semi--circle the valve 13 will be raised to an extent gradually increasing, so that any quantity of gasolene desired, can, by proportionately turning the disk 17, be caused to flow from the tank 1 into the tank 2 and thence to the engine. The stream of gasolene thus permitted to flow is so small that it draws with it a small quantity of air through the tube 6, so that air is permitted to enter the enriched mixture.

I claim:

1. ln combination with main and auxiliary receptacles for fluid fuel, having communication between them, the auxiliary tank communicating with the combustion chamber of an internal combustion engine, means operated at will, for simultaneously opening either of said communications and closing the other and when desired, opening both communications simultaneously, said means maintaining the communications established and cut off without necessitating the manual holding thereof.

2. In combination with an inlet manifold of an internal combustion engine, a main tank for containing fluid fuel, an auxiliary tank for containing a small supply of fuel having a communication with the main tank, a valve for controlling the communication between the tanks, a conduit leading from the auxiliary tank to said inlet manifold, a valve for controlling said conduit and means for simultaneously opening either of said valves and closing the other including a rotatable member which when rotated a predetermined amount will open one valve and close the other and remain in such position to maintain the valves opened and closed respectively and means for rotating said member.

3. rlhe combination with an inlet manifold of an internal combustion engine, of a main tank for containing a fluid fuel, an auxiliary tank for containing a small supply of fuel and having a communication with said main tank, a valve for controlling the flow of fuel from one tank to the other, a conduit leading from the auxiliary tank to the intake manifold, a valve for controlling the flow of fuel through said conduit and which when rotated will move toward or away from closing position, a cam connected with and for rotating said last named valve, operative connections between the first named valve and cam whereby when said cam is moved either of said valves will be simultaneously opened and the other closed and means for rotating said cam.

AUGUST H. PAPE. 

